Cobot: a robot that works alongside people
A collaborative robot (cobot) is a robot designed to work safely next to people without safety fences: it is slower and lighter than industrial robots and stops if it feels contact.
In plain words
A regular industrial robot is like a heavy truck: powerful and fast but dangerous, so it is fenced off. A cobot is like a bicycle in a park: it rides carefully among people and stops as soon as someone gets in the way. It does not replace a person - it helps them by holding, handing over and repeating routine movements.
How it works
- A cobot has force and torque sensors in its joints.
- If it bumps into a person or an object, it feels the resistance and stops.
- Its speed and force are limited for safety.
- You can program a cobot just by guiding its arm with your hand - it remembers the path.
- The person and the cobot share the work: the person does the complex part, the robot the repetitive part.
Where you'll see it
Cobots work in small factories, electronics assembly, packaging, laboratories, cafés (robot baristas), kitchens and logistics. They are chosen when part of a job needs automating without rebuilding the whole workshop.
Does it matter when buying
Not for an ordinary buyer, but it is a good example of how robots change work: they do not remove people, they take away the routine. If you ever work in manufacturing, you will most likely meet a cobot rather than a robot behind a fence.
Myths
- Myth: A cobot is completely safe. Reality: It is safer, but a risk assessment is done for every task - especially with sharp tools.
- Myth: A cobot replaces a worker. Reality: Usually it takes over some routine movements, while the person supervises and does the complex parts.
FAQ
How is a cobot different from an industrial robot?
A cobot is slower and lighter, has touch sensors and can work next to people.
Is it hard to program a cobot?
Often not: you can guide it along the path by hand or build a program from blocks on a tablet.
How much can a cobot lift?
Usually from a few to a few dozen kilograms, depending on the model.